YMF753 Datasheet, PDF (14/26 Pages) YAMAHA CORPORATION – AC97 Revision2.2 Audio CODEC with Digital Audio I/F

YMF753
64h : ZV Port Volume (Read/Write, Default: 8808h or C808h)
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Mute MSEL -
GL4-0
ZEN ZAC -
GR4-0
Mute..............Setting this bit to “1” mutes both left and right channels of the ZV port.
MSEL ...........This bit is read only, and indicates the status of No.40 MSEL pin.
“0” : Low
“1” : High
GL4-0 ...........These bits determine the volume level of the ZV port left channel by 1.5dB step. The volume
range is from +12dB to -34.5dB. When all bits are set to “0”, volume is maximum (+12dB) and
when all bits are set to “1”, volume is minimum (-34.5dB).
ZEN ..............This bit selects whether ZV port is used or not.
“0” : ZV port is power down state, and can not be used.
“1” : ZV port can be used.
ZAC ..............This bit is read only, and indicates whether the bit clock (ZV_BCK) is input to ZV port or not.
“0” : The bit clock (ZV_BCK) is not input.
“1” : ZV port is active because the bit clock (ZV_BCK) is input.
GR4-0 ...........These bits determine the volume level of the ZV port right channel by 1.5dB step.
Setting to them is the same as the upper GL4-0 bits.
66h : DIT Control 2 (Read/Write, Default: 0040h)
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
-
-
-
-
-
-
-
*
*
* TX-3 * TX-8 DMU UDS 3AWE
TX-3 .............SPDIF signal is output from No.43 DIT, if this bit is set to “1” at MSEL= “Low”.
TX-8 .............SPDIF signal is output from No.48 DIT, if this bit is set to “1” at MSEL= “Low”.
DMU.............Setting this bit to “1” mutes audio data output from DIT.
UDS ..............This bit selects the data output from DIT.
“0” : Data from the AC-Link
“1” : Data from A/D converter
3AWE ...........This bit selects whether 3Ah register can be written or not.
“0” : 3Ah register is Read Only.
“1” : 3Ah register is Read / Write.
D8, D7, D6 and D4 should not be changed from the default value.
14
March 6, 2001